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Aircraft Indicators
Backlit Inclinometers
Ball Banking
Bubble Levels
Boom Angle
Slip Indicators
Tilt Switches

Ball Bank Indicators:  Mechanical and Digital

1023W1 Manual Ball Bank Indicator Specifications                 RDI Series Electronic Ball Bank Indictor

1023W1                                                                            RDS7-BB-09




For information on Rieker's Patented Curve Advisory Reporting Service (CARS),

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Rieker Ball Bank Indicators reflect the operating procedures of Federal, State, and local roads and highways, based upon the “Speed Zone Theory” and “85th Percentile Speeds”, which is adapted by the American Association of State Highway and Transportation Officials (AASHTO); Institute of Transportation Engineers (ITE) and as defined in the Federal and/or State Manual of Uniform Traffic Control Devices, (MUTCD). Rieker indicators have been the ball bank standard instruments used by Federal and State Departments of Transportation Nationwide since the 1950's.



The term "Ball Bank Indicator" refers to an inclinometer (or Accelerometer used as an inclinometer) that is used for the specific purpose of determining safe  (uniform advisory) curve speeds for horizontal curves.  It measures the overturning force (side friction), measured in degrees, on a vehicle negotiating a horizontal curve.

If you have an application that requires custom specifications, please contact us today with your requirements.  One of our engineers will be happy to speak with you.


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Rieker Inc.
34 Mount Pleasant Rd
Aston, PA 19014
Ph: (610) 500-2000
Fax: (610) 500-2002
Toll Free: (800) 497-4523
Hours of Operation:
8am-5pm EST

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